I've been buying wheelweights too. I got more lesd in mine but still lost quite a bit. I don't throw out the rejects. I swap 'em back to the recycler. Next time I purchase lead I'm getting the roofing and plumbing lead which I expect to be much more pure lead. The guy at the recycle place likes to visit and so do I. I always talk to him for 20 minutes or so. He doesn't need my $30 lead purchases . He ships that stuff out by the semiload. I'm happy he sells me lead. Hope Obahma and his Greenlovers don't legislate away my connection.